69 lines
1.3 KiB
Go
69 lines
1.3 KiB
Go
// Copyright (C) 2014 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package ignore
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import (
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"time"
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"github.com/syncthing/syncthing/lib/ignore/ignoreresult"
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)
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type nower interface {
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Now() time.Time
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}
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var clock = nower(defaultClock{})
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type cache struct {
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patterns []Pattern
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entries map[string]cacheEntry
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}
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type cacheEntry struct {
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result ignoreresult.R
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access int64 // Unix nanosecond count. Sufficient until the year 2262.
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}
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func newCache(patterns []Pattern) *cache {
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return &cache{
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patterns: patterns,
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entries: make(map[string]cacheEntry),
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}
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}
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func (c *cache) clean(d time.Duration) {
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for k, v := range c.entries {
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if clock.Now().Sub(time.Unix(0, v.access)) > d {
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delete(c.entries, k)
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}
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}
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}
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func (c *cache) get(key string) (ignoreresult.R, bool) {
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entry, ok := c.entries[key]
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if ok {
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entry.access = clock.Now().UnixNano()
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c.entries[key] = entry
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}
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return entry.result, ok
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}
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func (c *cache) set(key string, result ignoreresult.R) {
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c.entries[key] = cacheEntry{result, time.Now().UnixNano()}
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}
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func (c *cache) len() int {
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l := len(c.entries)
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return l
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}
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type defaultClock struct{}
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func (defaultClock) Now() time.Time {
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return time.Now()
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}
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